263920 R
2
Page 3
8
S
ervice
5.5-3
Upright Disassembly
(continued)
19.
Roll the outer intermediate upright downward and remove
the lower rollers. Remove the upper rollers and thrust
blocks from the outer upright. Note the number of shims
behind each roller and thrust block for reassembly.
20.
Attach an overhead hoist to the outer intermediate upright
and remove it through the top end of the outer upright.
Outer
Intermediate
Upright
MA0075.eps
Thrust
Block
19
19
19
20
Thrust
Plug
Thrust
Plug
Shim
Figure 39. Removing outer intermediate upright.
1.
Inspect the load for excessive wear or
damage. Rollers with visible flat spots or cracks
should be replaced.
2.
Inspect the load roller bearings by turning the rollers
on their shafts. Rollers with roughness or noticeable
restrictions to turning should be replaced.
3.
Inspect the load roller stub shafts. IF they are
damaged or have cracks at the base, the upright
must be replaced or repaired.
4.
Inspect the outer and intermediate upright thrust
blocks and plugs. If the wear surface is worn to less
than 1/16 in. (1.5 mm) thickness, they should be
replaced as described in Section 5.5-5.
5.
Inspect the free and main lift chains as described in
Section 5.6-1.
5.5-4
Upright Inspection
